My Integration for Sungrow Inverters uses the modbus integration and implements ~150 sensors with unique_ids given.
The integration grew over almost two years and now I want to consolidate the naming to ease maintanance (e.g., add a second inverter by find and replace “sg1” with “sg2”) and readability.
Simply changing the unique_id causes new sensors to appear named *_2 (which is not suprising, as altough the name is the same, the internal unique_id changes…)
Q1: What is the best way to change unique_ids while linking the “new and old” sensors and keeping a common history?
Example:
- name: Sungrow device type code
unique_id: dev_code
slave: !secret sungrow_modbus_slave
address: 4999 # reg 5000
input_type: input
count: 1
data_type: uint16
swap: word
scan_interval: 600
Changing uid:
unique_id: sg1_dev_code
Causes the original sensor to go unavailable and the new sensor “sensor.sungrow_device_type_code_2” is created.
One (BAD) way to deal with this could be (maybe not 100% correct, but would work)
- remove YAML integration
- Restart HA (do not simply reload!)
- Manually delete all 150 sensors via GUI
- Restart HA (do not simply reload!)
- Update yaml-integration
- Reload HA
… but nobody wants to manually delete 150 sensors and loose the history…
Q2: Is there a way to make a “migration script” to ease things for other users of my integration?
